OMRON Inverter 3G3MX2-A4055-Z 400V/5.5KW

( Brand: Omron ), ( Manufacturer Part Number: 3G3MX2A4055Z ), ( Model: 3G3MX2-A4055-Z ), ( Part Type: Inverter )

Review OMRON Used And Tested Inverter 400v/5.5kw

The **Omron 3G3MX2-A4055-Z** is a high-performance, variable frequency drive (VFD) designed to deliver precise control, energy efficiency, and reliability for a wide range of industrial and commercial applications. Part of Omron s advanced **3G3MX series**, this inverter is engineered to handle demanding motor control tasks with exceptional accuracy, making it an ideal solution for applications such as pumps, fans, conveyors, compressors, and HVAC systems. Operating at a nominal voltage of **400V (3-phase)**, this compact yet robust unit provides a **5.5kW (7.4 HP) output power**, ensuring optimal performance for medium-duty motor loads while maintaining energy savings through intelligent speed regulation. The **A4055-Z model** features Omron s proprietary **EcoNavi** energy-saving technology, which dynamically adjusts motor speed to reduce unnecessary power consumption without compromising operational efficiency. This not only lowers operational costs but also extends the lifespan of both the motor and the inverter by minimizing thermal stress.

One of the standout features of the **3G3MX2-A4055-Z** is its **user-friendly interface and advanced control capabilities**, which include a **color touchscreen display** with intuitive navigation, allowing operators to monitor and adjust parameters with ease. The inverter supports **PID control, vector control, and sensorless vector control**, enabling precise torque and speed regulation even under varying load conditions. Additionally, it incorporates **Omron s advanced motor protection algorithms**, including overload protection, short-circuit detection, and thermal management, ensuring reliable operation even in harsh environments. The **IP20 protection rating** (with optional IP54 enclosure) provides basic protection against solid objects and dust, making it suitable for indoor installations where cleanliness and durability are priorities.

For enhanced connectivity and integration, the **3G3MX2-A4055-Z** offers multiple communication interfaces, including **Ethernet (Modbus TCP), RS-485 (Modbus RTU), and Profibus DP**, allowing seamless integration with PLCs, SCADA systems, and other industrial automation networks. This flexibility ensures smooth operation within larger control architectures, enabling centralized monitoring and remote diagnostics. The inverter also supports **Omron s Sysmac platform**, which simplifies programming and troubleshooting through intuitive software tools like **Sysmac Studio**. With built-in **diagnostic functions**, including fault code logging and predictive maintenance alerts, users can quickly identify and resolve issues before they escalate, reducing downtime and maintenance costs.

Safety and compliance are paramount in industrial applications, and the **3G3MX2-A4055-Z** meets stringent international standards, including **CE, UL, and CB certifications**, ensuring it is safe for use in a variety of global markets. Its **low harmonic distortion** and **high efficiency** (up to **95%**) further contribute to cleaner power systems and reduced electromagnetic interference, making it a sustainable choice for environmentally conscious facilities. The inverter s **compact and modular design** allows for easy installation in tight spaces, while its **wide operating temperature range (-10 C to 50 C)** ensures reliable performance in both controlled and variable climates.

Whether deployed in manufacturing plants, commercial buildings, or renewable energy systems, the **Omron 3G3MX2-A4055-Z** delivers a perfect blend of **performance, energy savings, and operational flexibility**. Its combination of **advanced control technology, robust protection features, and seamless integration capabilities** makes it a versatile and future-proof solution for motor control applications where precision, efficiency, and reliability are non-negotiable. With Omron s reputation for innovation and quality, this inverter stands as a dependable choice for engineers and facility managers seeking to optimize their industrial processes.

### **Pros and Cons of buying a OMRON 3G3MX2-A4055-Z (400V, 5.5kW) Inverter**

#### **Pros**

1. **High Efficiency and Energy Savings**

The OMRON 3G3MX series is known for its high efficiency, particularly in variable frequency drives (VFDs). This model operates with an efficiency rating of up to **96.5%**, reducing energy consumption compared to traditional fixed-speed motors. Over time, this leads to significant cost savings on electricity bills, especially in applications with frequent starts/stops or variable loads.

2. **Reliable and Durable Construction**

OMRON is a well-established brand with a strong reputation for industrial-grade equipment. This inverter is built with robust components, including a **fan-cooled design** and **IP20 protection rating**, making it suitable for moderate industrial environments. It also features **overload protection, short-circuit protection, and thermal overload protection**, enhancing its longevity.

3. **Wide Voltage Range and Compatibility**

The **400V input range (380V 480V)** makes this inverter versatile for different power systems, including those found in Europe, Asia, and parts of the Americas. It supports **three-phase motors (400V, 50/60Hz)**, making it compatible with a wide range of industrial and commercial applications such as pumps, fans, conveyors, and compressors.

4. **Advanced Control Features**

The inverter includes **smooth acceleration/deceleration (ramp control)**, **pluggable parameter settings**, and **PID control** for precise motor speed regulation. It also supports **remote control via analog signals (0 10V or 4 20mA)** and **digital communication (RS-485 Modbus RTU)**, allowing integration with PLCs or SCADA systems for automated control.

5. **Low Maintenance Requirements**

Unlike some older VFDs, this model has **fewer moving parts** and **self-diagnostic capabilities**, reducing downtime. The **fan-cooled design** helps dissipate heat efficiently, minimizing the risk of overheating. Additionally, OMRON provides **easy-to-read error codes** for troubleshooting, simplifying maintenance tasks.

6. **Good Warranty and Support**

OMRON offers **standard warranties (typically 1 2 years)** and has a strong after-sales service network. Many distributors and authorized service centers provide technical support, spare parts, and firmware updates, ensuring long-term reliability.

7. **Cost-Effective for Medium-Duty Applications**

At **5.5kW**, this inverter is priced competitively for its performance. It strikes a balance between **affordability and functionality**, making it suitable for small to medium-sized industrial or commercial setups where a high-end VFD might be overkill.

---

#### **Cons**

1. **Limited Overload Capacity**

While the inverter can handle **150% overload for 60 seconds**, it does not support **continuous overload operation** beyond the rated 5.5kW. Applications requiring **frequent high-load operations** (e.g., heavy-duty pumps or compressors) may need a higher-rated model.

2. **No Built-In Regenerative Braking**

This inverter **does not support regenerative braking**, meaning energy generated during deceleration is dissipated as heat. Applications requiring **energy recovery** (e.g., hoists, cranes) would need an additional braking resistor or a more advanced VFD.

3. **Basic Communication Protocols**

While it supports **RS-485 Modbus RTU**, it lacks **more advanced protocols** like **Ethernet/IP, Profibus, or Profinet**, which are common in modern industrial automation. This may limit integration with certain **smart factory or IoT-based systems**.

4. **Physical Size and Installation Space**

As a **400V, 5.5kW inverter**, it occupies a **moderate amount of space** and requires proper **ventilation and wiring compliance**. Installation in **confined or high-dust environments** may require additional protective measures (e.g., enclosures).

5. **No Touchscreen or Advanced HMI**

Unlike some newer OMRON models (e.g., **3G3MX-E series**), this inverter has a **basic LCD display** with limited user interface options. Users must rely on **parameter settings via buttons or external devices** for complex configurations, which may be less intuitive for non-technical operators.

6. **Potential Firmware Limitations**

Some users report that **firmware updates are not always readily available** for older models, which could limit access to the latest features or bug fixes. Always verify compatibility before purchasing.

7. **No Built-In Energy Monitoring**

While it tracks motor speed and current, it does **not include advanced energy-saving features** like **V/f control optimization or adaptive torque control**, which some competitors offer in higher-end models.

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### **Conclusion**

The **OMRON 3G3MX2-A4055-Z (400V, 5.5kW) inverter** is a **reliable, efficient, and cost-effective solution** for applications requiring **variable speed control in moderate industrial or commercial settings**. It excels in **energy savings, durability, and ease of use**, making it a strong choice for **pumps, fans, conveyors, and other variable-load systems**.

However, it is **not ideal for applications needing regenerative braking, advanced communication protocols, or continuous overload operation**. If these features are critical, consider **higher-end models (e.g., OMRON 3G3MX-E series) or alternative brands** like **Siemens, ABB, or Danfoss**.

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### **Recommendation**

- You need a **budget-friendly, efficient VFD** for **5.5kW, 400V, three-phase applications**.

- Your system requires **smooth speed control, energy savings, and basic automation**.

- You operate in a **moderate industrial environment** with **adequate ventilation**.

- You prefer **reliable brand support** with **easy maintenance**.

- You require **regenerative braking, advanced communication, or continuous overload capacity**.

- Your application demands **higher precision control (e.g., CNC machines, robotics)**.

- You need **remote monitoring or cloud integration** for predictive maintenance.

**Final Verdict:** This is a **solid mid-range VFD** that delivers **good performance for its price**, making it a **recommended choice for many industrial and commercial applications**. Always verify **voltage compatibility, load requirements, and future scalability** before purchasing.

Details:

specifications variablfrequen:

• brand: Omron
• mpn: 3g3mx2a4055z
• model: 3g3mx2-a4055-z
• part type: Inverter

shipping variablfrequen:

• type: Fixed
• service: Standard
• class: Standard
• cost: $0.00
• transit: 6-12 Days

general variablfrequen:

• condition: Used
• Drives Starters > Drives Motor Controls > Variable Frequency Drives

offer variablfrequen:

• started: June 4, 2026
• quantity: 2
• sold: 0
• best offers: True
• availability: In Stock
• options: Ship-to-home

returns variablfrequen:

• time: 30 Days
• paid by: Buyer
• method: Money back
• policy: Returns Accepted

seller variablfrequen:

• city: Perth Amboy, New Jersey
• # reviews: 1382
• rating: 99.4%

payments variablfrequen:

• other
• credit card: Discover
• wallet: Google-pay

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